we would like to backup our on-prem environment (Hyper-V) to an external server in our openstack cloud.We are able to backup the whole server to the Server in the cloud, but we would like to backup files/folders and not always the whole server.Is this possible?With the option "copy file" we are able to copy the files between the servers in our on-prem environment but not to the external server in the cloud.

It's not possible to target cloud storage by the file copy job.However, you can use VAW to backup files and folders directly to Veeam Cloud Connect (need to find a VCSP for that) or regular Veeam backup repository. Thanks!